FK5G32-03-12 balance drum locking nut is a core fastening component designed for rotating equipment such as steam-driven water supply pumps and high-speed centrifugal pumps. It is used to accurately fix the balance drum assembly to prevent displacement or loosening caused by axial force fluctuations during operation. It uses high-strength materials and precision manufacturing processes to ensure long-term stable operation under extreme conditions such as high temperature, high pressure, and high speed, effectively ensuring the sealing of the pump body and equipment efficiency. It is a key safety component of the industrial fluid delivery system.

Ultra-high load capacity: forged with 42CrMo alloy steel, tempered + surface nitriding treatment, tensile strength ≥1080MPa, axial load tolerance ≥500kN, suitable for high-power pump group requirements.

High temperature and high pressure resistance: suitable for saturated steam and high-temperature medium environment

Anti-loosening design: combined with the preload self-locking function, the torque retention rate under vibration conditions is ≥95%.

Quick disassembly and maintenance, maintenance efficiency increased by 40%.

 

Applicable shaft diameter range: Φ80mm ~ Φ200mm (support non-standard customization)

Rated torque: 3000~12000N・m (optional in grades)

Working pressure: ≤35MPa

Standard certification: ISO 6157-1, ASME B18.2.2

Main structure: one-piece forging, the internal thread adopts multi-line trapezoidal thread, with large contact area and uniform stress distribution.

Anti-recess groove: outer edge annular groove design, suitable for stop gasket or wire locking device.

 

Power industry: steam-driven feed water pumps for thermal power plants, main pump groups for nuclear power plants, waste heat recovery systems

Petrochemical industry: heavy oil delivery pumps, hydrogenation reaction feed pumps, liquefied natural gas (LNG) pumps

Metallurgy and shipbuilding: blast furnace circulating water pumps, marine boiler feed water pumps, seawater desalination high-pressure pumps

Industrial manufacturing: supercritical CO₂ circulating pumps, high-temperature molten salt pumps

 

Support non-standard dimensions, thread specifications, coating processes and special working conditions customization.